html{
    height: 100%;
    width: 100%;
    padding: 0;
}

body {
 width: 100%;
 height: 100%;
 margin: 0;
 padding: 0;
 display: flex;
 justify-content: center;
 align-items: center;
}

.frame{
    /* 调试属性 */
    /* border: 1px solid;  */

    width: 400px;
    height: 400px;

    /* 设置边界 */
    border-radius: 2px;
    box-shadow: 1px 1px 10px 0px rgba(0,0,0,0.3);

    /* 设置背景 */
    /* 当所有浏览器都不支持一下设置时，启用 */
    background: #43389f;
    /* 兼容性考虑，设置渐变背景 */
    background: -webkit-linear-gradient(bottom left, #43389f 0%, #4ec6ca 100%);
    background: -moz-linear-gradient(bottom left, #43389f 0%, #4ec6ca 100%);
    background: -o-linear-gradient(bottom left, #43389f 0%, #4ec6ca 100%);
    background: linear-gradient(to top right, #43389f 0%, #4ec6ca, 100%);
    /* 当浏览器不支持线性渐变时，使用特殊方法实现渐变，比如低版本IE浏览器，使用专用的过滤器 */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#43389F', endColorstr='#4ec6ca',GradientType=1 );

    /* 设置字体 */
    font-family: 'Courier New', 'Courier', sans-serif;
    color: white;
 
    /* 为字体设置抗锯齿,实验性属性，仅部分浏览器支持 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;

    /* 使内容居中 */
    display: flex;
    justify-content: center;
    align-items: center;
}

.center{
    /* 调试 */
    /* border: 1px solid black; */

    position: relative;
}

.number{
    /* 调试 */
    /* background-color: rgba(0, 0, 0, 0.5); */

    height: 100px;
    width: 200px;

    .one-one{
        position: absolute;
        z-index: 1;
        top: 0;
        left: -16px;
        height: 40px;
        width: 20px;

        background-color: white;
        border-radius: 3px;
        box-shadow: 0px 0px 13px 0px rgba(0,0,0,0.2);

        transform: rotate(50deg);
    }

    .one-two{
        position: absolute;
        z-index: 10;
        width: 24px;
        height: 100px;
        top: 0;
        left: 0;

        background-color: white;
        border-radius: 3px;
        box-shadow: 0px 0px 13px 0px rgba(0,0,0,0.2);
    }

    .zero-one,
    .zero-two{
        position: absolute;
        height: 100px;
        width: 100px;
        left: 17px;
        top: 0px;
        z-index: 8;

        box-sizing: border-box;
        border-radius: 50%;
        border: 24px solid white;
        box-shadow: 0px 0px 13px 0px rgba(0,0,0,0.2);
    }

    .zero-two{
        left: 100px;
        z-index: 6;
    }
}

.big {
    position: relative;
    display: block;
    z-index: 20;
    margin-top: 6px;

    text-transform: uppercase;
    font-size: 84px;
    line-height: 60px;
    font-weight: 700;
}

.small{
    position: relative;
    z-index: 20px;
    display: block;
    font-size: 23px;
    
    line-height: 20px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 700;
}